| 摘要 |
<p>For the measurement of their dimensions and/or volumes and/or weights, objects are conveyed e.g. on a conveyor rollers (16), through a measuring frame (10) disposed above a weighing device (24) and having a plurality of emission sources (12) and a plurality of emission detectors (14) arranged in pairs in at least one principal direction. Each detector (14) is adapted each to emit a signal when exposed to emission from the respective source (12). A calculating device receives and compiles the signals from the detectors (14) and the device (24) and based on this information calculates the volume and/or the dimensions and/or the weight of the object. The emission sources (12), which may be infra-red emitters, are arranged to be switched on cyclically in sequence each for a certain time period, and the corresponding detector (14) with which it forms a pair, during the same time period, and only during the specific time period, is effective to detect emission from the source (12) and emit a corresponding signal, which signal is transferred to the calculating unit for the latter to perform its calculations.</p> |
